CN217557746U - Steel wire rope pull-up node device of discharging platform - Google Patents
Steel wire rope pull-up node device of discharging platform Download PDFInfo
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- CN217557746U CN217557746U CN202221662005.7U CN202221662005U CN217557746U CN 217557746 U CN217557746 U CN 217557746U CN 202221662005 U CN202221662005 U CN 202221662005U CN 217557746 U CN217557746 U CN 217557746U
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Abstract
The utility model provides a platform wire rope pull-up node means of unloading, including pre-buried sleeve pipe in building subject structure edge frame roof beam, the intraductal bolt that is equipped with of cover, the one end of bolt runs through in proper order and presss from both sides tight steel sheet, passes the sleeve pipe and stretches out, bolt extension tip threaded connection nut, one side laminating building subject structure edge frame roof beam of steel sheet, the opposite side fixed connection steel pull ring of steel sheet, steel pull ring connection wire rope. This application has designed a new atress structure, exert pulling force on the wire rope promptly and act on the steel pull ring → the steel pull ring passes through the welding seam and transmits power for the steel sheet → the steel sheet passes through friction type high strength bolt will transmit power to with the contact surface of concrete on → the steel sheet finally balances the steel sheet pulling force that receives with the frictional force of concrete contact surface, replaced current load transfer route, the bolt of this application is friction type high strength bolt, the bearing capacity compares ordinary bolt higher.
Description
Technical Field
The utility model relates to a construction engineering technical field especially relates to a platform wire rope of unloading pulls up node means.
Background
At present, the conventional method for lifting the steel wire rope of the cantilever unloading platform comprises the following steps: the smooth steel bars are processed into steel pull rings, the steel pull rings are embedded into the main body structure edge frame beam, and the pulling force is provided by the aid of the adhesive force between the steel pull rings and concrete.
The patent of the Chinese utility model with the authorization publication number of 'CN 208996471U' and the patent name of 'a self-made unloading platform combined type steel wire rope pull ring' discloses a self-made unloading platform combined type steel wire rope pull ring, which comprises an integrally formed cylindrical section and a tie section, wherein the cylindrical section is a steel bar material section and is fixedly connected with a shear wall through a nut after passing through a sleeve pre-embedded in the shear wall; the drawknot section comprises a stop hoop and a drawhole plate, wherein the drawhole plate is provided with a drawhole for a steel wire rope to pass through, and the stop hoop is arranged between the cylindrical section and the drawhole plate and is of an annular plate structure; the stop hoop, the broaching plate and the cylindrical section are coaxially arranged. Although this wire rope pull ring is whole to be turned out, the platform that unloads has been simplified and the lifting efficiency of the platform of unloading is improved, the drawknot quality of platform wire rope and structure of unloading has also been improved simultaneously, the essence of this application is that exert pulling force on the wire rope and act on the perforated plate → the perforated plate transmits power for the pull ring main part → the pull ring main part transmits power for screw thread and nut → screw thread and nut are the final balanced wire rope pulling force, the pull ring main part bears pulling force and shear force simultaneously, the yield strength requirement to the pull ring main part is high, can not generally be applicable to the job site.
SUMMERY OF THE UTILITY MODEL
The essence to prior art is that the pull ring main part bears pulling force and shear force simultaneously, and the yield strength requirement to the pull ring main part is high, can not generally be applicable to job site's technical problem, the utility model provides a platform wire rope pull-up node means of unloading.
In order to achieve the above purpose, the technical solution of the present invention is realized as follows: the utility model provides a platform wire rope pull-up node means of unloading, includes the pre-buried sleeve pipe in building major structure edge frame roof beam, the intraductal bolt that is equipped with of cover, the one end of bolt run through in proper order press from both sides tight steel sheet, pass the sleeve pipe and stretch out, bolt extension tip threaded connection nut, one side laminating building major structure edge frame roof beam of steel sheet, the opposite side fixed connection steel pull ring of steel sheet, steel pull ring connection wire rope.
The bolt is M20.8 level friction type high strength bolt, and friction type high strength bolt can not produce the destruction to the bolt under bearing capacity extreme condition, has higher factor of safety.
And a nut steel base plate is arranged between the nut and the edge frame beam of the building main body structure, and the nut steel base plate prevents the nut from being directly extruded by the edge frame beam of the building main body structure.
One side of the steel plate close to the steel pull ring is provided with a steel backing plate, the bolt penetrates through the steel backing plate, and the steel backing plate is positioned on the left side and the right side of the steel pull ring.
The steel pull ring is a semicircular pull ring formed by bending HPB300 steel bars, and the steel pull ring formed by bending the HPB300 steel bars has high toughness and large stress area.
The steel tie plate is square steel tie plate, and square steel tie plate is in the left and right sides of semi-circular pull ring, and the steel sheet is the Q235B steel sheet, and the steel sheet both sides set up the round hole, and the round hole of steel sheet one side is the elliptical aperture, and the sleeve pipe is the A25PVC sleeve pipe, connect through circumference angle welding seam between steel pull ring and the steel sheet.
Simultaneously, this application has designed a new atress structure, exert pulling force on the wire rope promptly and act on the steel pull ring → the steel pull ring passes through the welding seam and transmits power for the steel sheet → the steel sheet passes through friction type high strength bolt with power transmission to with the concrete on the contact surface → the steel sheet finally balances the pulling force that the steel sheet receives with the frictional force of concrete contact surface, has replaced current load transfer route.
The bolt of this application is friction type high strength bolt, does not bear pulling force and shear force simultaneously, compares with ordinary bolt and has higher bearing capacity and security, and this application steel of selecting is Q235B level steel simultaneously, and the steel pull ring is HPB300 smooth round steel bar, and the bolt is M208.8 level friction type high strength bolt, and the buried sleeve pipe is A25PVC sleeve pipe, and it is very general to use in the engineering construction field to go up the material, and the technique is also very mature, and it is very convenient to draw materials and construct.
In addition, in the prior art, after the unloading platform is dismantled, steel pull rings pre-buried in the main body structure are arranged in each construction operation layer, the steel loss amount is very huge, and in addition, the exposed part of the steel pull ring needs to be cut off, so that the construction cost is increased. Compared with the conventional method, the PVC sleeve is only left in the main body structure, and other components can be recycled, so that the method is wide in applicability and high in economic benefit.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a side view of the structure of the present invention.
Fig. 2 is a front view of the structure of the present invention.
Fig. 3 is a front view of the steel pull ring of the present invention.
Fig. 4 is a side view of the steel tab of the present invention.
Fig. 5 is a front view of the welding of the steel plate and the steel ring of the present invention.
Fig. 6 is a top view of the steel plate and steel tab welding of the present invention.
Fig. 7 is a schematic diagram of a steel plate according to the present invention.
Fig. 8 is a schematic view of the steel backing plate of the present invention.
Fig. 9 is a schematic view of the overall stress of the present invention.
In fig. 1 and 2, 1 building body structure edge frame beam, 2 casing pipes, 3 bolts, 4 steel plates, 5 steel pull rings, 6 steel wire ropes, 7 nuts, 8 nut steel backing plates, 9 steel backing plates and 10 circumferential fillet welds.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 to 9, embodiment 1, a platform wire rope pull-up node device of unloading, including pre-buried sleeve pipe 2 in building major structure edge frame roof beam 1, be equipped with bolt 3 in the sleeve pipe 2, the one end of bolt 3 runs through in proper order and presss from both sides tight steel sheet 4, passes sleeve pipe 2 and stretches out, bolt 3 stretches out partial tip threaded connection nut 7, building major structure edge frame roof beam 1 is laminated to one side of steel sheet 4, the opposite side fixed connection steel pull ring 5 of steel sheet 4, steel pull ring 5 connects wire rope 6, welds steel pull ring 5 on the steel sheet 4, the welding seam is followed steel pull ring 5 and steel sheet 4 contact surface border full weld, leg height 6mm, steel pull ring 5 connects wire rope 6.
The steel sheet 4 is the Q235B steel sheet, and 4 both sides of steel sheet set up the round hole, and the round hole of 4 one sides of steel sheet sets up to the ellipse circular hole, because the positional deviation of pre-buried plastic tubing during actual construction, the concrete probably dashes the plastic tubing askew when pouring concrete, so the round hole of 4 one sides of steel sheet sets up to the ellipse circular hole, reserves the error value.
In order to ensure the utility model discloses have sufficient bearing capacity, calculate through finite element calculation software ANSYS 2021 R1, steel support department atress analysis result as follows:
(1) The nominal diameter of the steel wire rope is preset to be 20mm, and the tensile angle of the steel wire rope and the cross section deformation of a pull node are considered in the actual construction state, so that the preset tensile direction is from the center of a steel pull ring, an included angle of 45 degrees is formed between the preset tensile direction and the plane of a steel plate, the tensile force is 49KN (5 t), and the preset tensile direction is converted into uniform load sigma =49000/360=136.11MPa.
(2) Through analysis and calculation, the maximum stress of the steel support is at the pull joint of the steel wire rope, the maximum stress is 200.26MPa, and the stress at the welding seam is 16.46MPa.
The stress results obtained by analysis and calculation are all within the allowable value range of the material strength.
(3) The maximum deformation of the steel support appears at the pull node of the steel wire rope, the maximum deformation is 1.02mm, and it should be noted that the deformation does not mean that the integral deformation at the pull node of the steel wire rope is 1.02mm, but a certain stress concentration point is 1.02mm, and the actual integral deformation is far less than 1.02mm.
(4) Stress condition of friction type high-strength bolt
Through the finite element calculation and analysis, the stress condition inside the steel support meets the safety requirement, and the steel support can be regarded as a whole to be subjected to friction force analysis. Since the predetermined wire rope tension is 49KN, 2 bolts on one steel support are allocated to a single bolt for 24.5KN, the simplified stress model is shown in fig. 9.
N is the pretightening force of the bolt, F is the friction force between the steel plate and the concrete contact surface, and F is the steel wire rope tension distributed by a single bolt.
According to a large number of researches, the surface friction coefficient of the common steel plate and the concrete can be 0.6, in order to ensure safety, the friction coefficient mu =0.3 is set, and according to 3.2.5 bolts in the technical specification JGJ82-2011 of steel structure high-strength bolt connection, the bolt pretightening force is 125KN, F = mu 8729 (N-F8729, sin45 DEG =32.3KN > F8729, cos45 DEG =17.32KN, and the safety requirement is met.
The steel pull ring 5 is connected with the steel plate 4 through a circumferential fillet weld 10, the height of a welding leg of the circumferential fillet weld 10 is 6mm, and an E43 type welding rod is used for welding.
When this embodiment is implemented, the semi-circular pull ring that the crooked HPB300 reinforcing bar of making of HPB300 reinforcing bar was bent, with semi-circular pull ring welding on steel sheet 4, pre-buried sleeve pipe 2 on building major structure edge frame roof beam 1, M20.8 level friction type high strength bolt loops through the bolt hole on the steel sheet 4, pre-buried sleeve pipe 2 and nut 7, be connected with building major structure, exert pulling force on wire rope 6 and act on steel pull ring 5, steel pull ring 5 transmits power for steel sheet 4 through the welding seam, steel sheet 4 transmits power to on the contact surface with building major structure edge frame roof beam 1 through friction type high strength bolt, the steel sheet 4 finally balances the pulling force that steel sheet 4 received with the frictional force of building major structure edge frame roof beam 1 contact surface.
As shown in fig. 1 to 9, in embodiment 2, on the basis of embodiment 1, a nut steel shim plate 8 is arranged between the nut 7 and the building main body structure edge frame beam 1, the nut steel shim plate 8 is a Q235B steel plate, a hole is arranged at a geometric center position of a plane of the nut steel shim plate, the hole is matched with the bolt 3, and the nut steel shim plate 8 is a circular or square steel shim plate.
One side that steel sheet 4 is close to steel pull ring 5 is equipped with steel backing plate 9, and bolt 3 runs through steel backing plate 9, steel backing plate 9 is the square steel backing plate of Q235B, and the plane geometry center department of steel backing plate 9 is equipped with the through-hole of cooperation bolt 3.
The steel pull ring 5 is formed by bending an HPB300 steel bar, the steel pull ring 5 formed by bending the HPB300 steel bar has higher toughness and larger stress area, the steel wire rope 6 and the steel pull ring 5 can be better protected when the steel wire rope 6 is stressed, the diameter of the HPB300 steel bar is 20mm, the inner diameter of the bent steel pull ring 5 is 80mm, and the outer diameter of the bent steel pull ring 5 is 120mm.
The steel sheet 4 adopts the Q235B steel sheet, and the size of steel sheet 4 is 260mm 160mm 20mm, and sleeve pipe 2 is the A25PVC sleeve pipe, and Q235B level steel and A25PVC sleeve pipe, and it is very general to use in the engineering construction field, and the technique is also very mature.
When the embodiment is implemented, the sleeve 2 is embedded on the edge frame beam 1 of the main structure of the building, the M20.8-level friction type high-strength bolt 8 sequentially penetrates through the bolt holes in the steel base plate 9 and the steel plate 4, the embedded sleeve 2, the nut steel base plate 8 and the nut 7, and the M20.8-level friction type high-strength bolt is connected with the main structure of the building and is generally suitable for a construction site.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a platform wire rope pull-up node means of unloading, includes pre-buried sleeve pipe (2) in building major structure edge frame roof beam (1), its characterized in that, be equipped with bolt (3) in sleeve pipe (2), the one end of bolt (3) runs through in proper order and presss from both sides tight steel sheet (4), passes sleeve pipe (2) and stretches out, bolt (3) extension tip threaded connection nut (7), building major structure edge frame roof beam (1) is laminated to one side of steel sheet (4), opposite side fixed connection steel pull ring (5) of steel sheet (4), wire rope (6) are connected in steel pull ring (5).
2. The discharging platform steel wire rope pull-up node device according to claim 1, wherein the bolt (3) is an M20.8 grade friction type high-strength bolt.
3. The unloading platform steel wire rope pulling-up node device according to claim 1, characterized in that a nut steel base plate (8) is arranged between the nut (7) and the building main structure edge frame beam (1), the nut steel base plate (8) is a Q235B steel plate, and a hole is arranged at the geometric center of the plane.
4. The discharge platform steel wire rope pull-up node device according to claim 1, wherein a steel backing plate (9) is arranged on one side of the steel plate (4) close to the steel pull ring (5), and the bolt (3) penetrates through the steel backing plate (9).
5. A discharge platform wire rope pull-up node arrangement according to claim 4, characterized in that the steel tab (5) is a semi-circular tab made of a bent HPB300 steel bar.
6. The unloading platform steel wire rope pull-up node device according to claim 5, wherein the steel base plate (9) is a Q235B square steel base plate, and a through hole matched with the bolt (3) is formed in the geometric center of the plane of the steel base plate (9).
7. The discharging platform steel wire rope pulling-up node device according to claim 6, wherein the steel plate (4) is a Q235B steel plate, round holes are formed in two sides of the steel plate (4), and the round hole in one side of the steel plate (4) is an elliptical hole.
8. The unloading platform steel wire rope pull-up node device according to any one of claims 1 to 7, wherein the sleeve (2) is an A25PVC sleeve.
9. A discharge platform wire rope pull-up joint arrangement according to claim 8, characterised in that the steel pull ring (5) and the steel plate (4) are connected by a circumferential fillet weld (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221662005.7U CN217557746U (en) | 2022-06-30 | 2022-06-30 | Steel wire rope pull-up node device of discharging platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221662005.7U CN217557746U (en) | 2022-06-30 | 2022-06-30 | Steel wire rope pull-up node device of discharging platform |
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| Publication Number | Publication Date |
|---|---|
| CN217557746U true CN217557746U (en) | 2022-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221662005.7U Active CN217557746U (en) | 2022-06-30 | 2022-06-30 | Steel wire rope pull-up node device of discharging platform |
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| CN (1) | CN217557746U (en) |
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- 2022-06-30 CN CN202221662005.7U patent/CN217557746U/en active Active
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